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1.1 Glossary

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This document uses the following terms:

audio format: A data structure that is used to define waveform-audio data. The actual structure of individual formats is opaque to the underlying transport protocol. For more information, see [MSDN-AUDIOFORMAT].

client: A computer on which the remote procedure call (RPC) client is executing.

dynamic virtual channel: A transport used for lossless communication between an RDP client and a server component over a main data connection, as specified in [MS-RDPEDYC].

protocol data unit (PDU): Information that is delivered as a unit among peer entities of a network and that can contain control information, address information, or data. For more information on remote procedure call (RPC)-specific PDUs, see [C706] section 12.

RC4: Means Rivest Cipher 4 invented by Ron Rivest in 1987 for RSA Security. It is a variable key-length symmetric encryption algorithm stream cipher that operates on a stream of data byte by byte. It's simple to apply, does not consume more memory, and works quickly on very large pieces of data such as WEP/WPA for wireless network encryption and SSL/ TLS for internet security. RC4 stream ciphers cannot be implemented on small streams of data. RC4 weaknesses make it vulnerable to various cryptographic attacks. For more information, see [SCHNEIER] section 17.1.

server: A computer on which the remote procedure call (RPC) server is executing.

SHA-1 hash: A hashing algorithm as specified in [FIPS180-2] that was developed by the National Institute of Standards and Technology (NIST) and the National Security Agency (NSA).

User Datagram Protocol (UDP): The connectionless protocol within TCP/IP that corresponds to the transport layer in the ISO/OSI reference model.

virtual channel: A transport used for communication between a client and a server component over a main data connection, in 1600-byte chunks, as specified in Static Virtual Channels in [MS-RDPBCGR].

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.